Organic light emitting device
US9147856B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2012 |
| Grant date | Sep 29, 2015 |
| Priority date | — |
| Expiry date | Jul 16, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K50/852
Abstract
An organic light emitting device is provided that includes a substrate; an embossing layer provided on the substrate; a planarization layer provided on the embossing layer; a first electrode provided on the planarization layer; an organic light emitting layer provided on the first electrode; and a second electrode provided on the organic light emitting layer. The planarization layer may include a first planarization layer provided on the embossing layer; and a second planarization layer provided on the first planarization layer. The embossing layer may have a refractive index ranging from about 1.3 to about 1.5. The planarization layer may include a first planarization layer having a surface roughness of about 10 nm to about 50 nm and a refractive index that ranges from about 1.8 to about 2.5; and a second planarization layer provided on the first planarization layer and having a surface roughness of less than about 10 nm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.